Antibacterial polymeric coating based on polypyrrole and polyethylene glycol on a new alloy TiAlZr

Ungureanu, Camelia; Pîrvu, Cristian; Mindroiu, Mihaela; Demetrescu, Ioana

doi:10.1016/j.porgcoat.2012.07.015

Cited by 44 publications

(40 citation statements)

References 14 publications

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“…The exposed surface area of specimens was around 1 cm 2 . The potentiodynamic polarization testing was performed of the specimens after different times immersion in the NaCl 3.5 wt% solution at a fixed sweeping rate of 2 mV s −1 . The protection efficiency (PE) is calculated by the following Equations:

PE (%) = \frac{I_{c o o r, b} - I_{c o o r, i}}{I_{c o o r, b}} \times 100 %

where

I_{c o o r, b}

and

I_{c o o r, i}

are the corrosion current densities of the mild steel and CBPCs.…”

Section: Methodsmentioning

confidence: 99%

“…The protection efficiency (PE) is calculated by the following Equations:

PE (%) = \frac{I_{c o o r, b} - I_{c o o r, i}}{I_{c o o r, b}} \times 100 %

where

I_{c o o r, b}

and

I_{c o o r, i}

are the corrosion current densities of the mild steel and CBPCs. Electrochemical impedance spectroscopy (EIS) was determined over a frequency range of 100 kHz to 0.01 Hz with an AC amplitude of 10 mV . The obtained potentiodynamic polarization testing and impedance data were analyzed using CHI660E and ZsimpWin software, respectively.…”

Section: Methodsmentioning

confidence: 99%

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The long‐term effectiveness and failure mechanism of the chemically bonded phosphate ceramic coatings with different thickness

Liu

Bian

2019

Int J Applied Ceramic Tech

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In this study, the chemically bonded phosphate ceramic coatings (CBPCs) with different thickness (100 µm, 200 µm, and 300 µm) are prepared on the mild steel (Q235). Potentiodynamic polarization testing and electrochemical impedance spectroscopywere carried out to study the synthetic effect of coating thickness and etching time (12,24,36, and 48 hours) on the corrosion behavior of CBPCs. The surface and cross section microstructure of CBPCs before and after different immersion time in 3.5 wt.% NaCl solution is investigated to better understand the corrosion behavior.Results revealed that the enhanced coating thickness can effectively postpone the corrosive factors infiltration into the substrate and prohibit the corrosion of the mild steel. From the potentiodynamic polarization testing results, the protection efficiency of the coating greatly increases with the increase in etching time. In addition, an increase in 10 000 and 1000 orders of magnitude of impedance value for the CBPCs with 12 hours and 48 hours etching time has been observed, respectively, indicating the CBPCs can effectively protect the mild steel from corrosion damage even with long-term service. K E Y W O R D Schemically bonded phosphate ceramic coatings, coating thickness, corrosion performance, etching time, mild steel

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PE (%) = \frac{I_{c o o r, b} - I_{c o o r, i}}{I_{c o o r, b}} \times 100 %

where

I_{c o o r, b}

and

I_{c o o r, i}

are the corrosion current densities of the mild steel and CBPCs.…”

Section: Methodsmentioning

confidence: 99%

“…The protection efficiency (PE) is calculated by the following Equations:

PE (%) = \frac{I_{c o o r, b} - I_{c o o r, i}}{I_{c o o r, b}} \times 100 %

where

I_{c o o r, b}

and

I_{c o o r, i}

Section: Methodsmentioning

confidence: 99%

The long‐term effectiveness and failure mechanism of the chemically bonded phosphate ceramic coatings with different thickness

Liu

Bian

2019

Int J Applied Ceramic Tech

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“…154 Some hydrophilic polymers like poly(methacrylic acid) (PMAA), poly(ethylene glycol) (PEG) and their derivatives have intrinsic antiadhesive properties. 17,70,71 Modification of Tibased implants by these polymers is a good means, but these hydrophilic surfaces also inhibit mammalian cell adhesion. 37,155−157 In order to utilize the surfaces to balance between bacteria killing and osteoblasts compatibility, further modification is required.…”

Section: Adhesion Resistant Polymericmentioning

confidence: 99%

“…It can be explained according to the interaction mechanism between biomaterials and bacteria. 70,160 Because of the surface charges and reduction in the Lifshitz -van der Waals attraction, long PEG chains are more effective in resisting bacteria adhesion as well as protein adsorption. It is attributed to the steric barrier, excluded volume effects, and osmotic repulsion exerted by the highly hydrated and flexible PEG chains.…”

Section: Adhesion Resistant Polymericmentioning

confidence: 99%

Polymeric Nanoarchitectures on Ti-Based Implants for Antibacterial Applications

Zhang

Ning

Zhou

et al. 2014

ACS Appl. Mater. Interfaces

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Because of the excellent mechanical properties and good biocompatibility, titanium-based metals are widely used in hard tissue repair, especially load-bearing orthopedic applications. However, bacterial infection and complication during and after surgery often causes failure of the metallic implants. To endow titanium-based implants with antibacterial properties, surface modification is one of the effective strategies. Possessing the unique organic structure composed of molecular and functional groups resembling those of natural organisms, functionalized polymeric nanoarchitectures enhance not only the antibacterial performance but also other biological functions that are difficult to accomplish on many conventional bioinert metallic implants. In this review, recent advance in functionalized polymeric nanoarchitectures and the associated antimicrobial mechanisms are reviewed.

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“…The antibacterial effect of PEG 400 is much lower compared to traditional disinfecting agents, but PEG 400 is nonirritating for the skin, its toxicity being low in case of acute oral administration or topical application [22]. Composite coatings based on polypyrrole (PPy) with various percentages of polyethylene glycol 400 (PEG 400) electrodeposited on TiAlZr alloy showed antibacterial properties as well [23].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial efficiencies of TiO2 nanostructured layers prepared in organic viscous electrolytes

Dumitriu

Popescu

Ungureanu

et al. 2015

Applied Surface Science

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Antibacterial polymeric coating based on polypyrrole and polyethylene glycol on a new alloy TiAlZr

Cited by 44 publications

References 14 publications

The long‐term effectiveness and failure mechanism of the chemically bonded phosphate ceramic coatings with different thickness

The long‐term effectiveness and failure mechanism of the chemically bonded phosphate ceramic coatings with different thickness

Polymeric Nanoarchitectures on Ti-Based Implants for Antibacterial Applications

Antibacterial efficiencies of TiO2 nanostructured layers prepared in organic viscous electrolytes

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